Ignore my 4-1 wheel post... - Miata Turbo Forum - Boost cars, acquire cats.

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Old 06-09-2008, 04:56 PM   #1
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Default Ignore my 4-1 wheel post...

God knows why it worked so well the first time but i havent been able to repeat it since. I tried megatunix's tooth monitor function and it shows the ms is interpreting the space between 2-3 and 3-1 as missing teeth. So there goes that idea for us ms-1 guys...glad i could sacrifice my car, sanity and crank wheel to find it out

Here's my shitty diagram of the wheel again to show what im talking about....




Now i've ground off both TDC teeth and im using the stock nb cam sensor as the 2nd trigger and it runs great. Ohh and for the diagram the teeth are 75* BTDC not 60.
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Old 06-11-2008, 12:56 PM   #2
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mike i think i need to talk to you about building a COP setup, you seem to know wtf you are talking about
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Old 06-11-2008, 08:31 PM   #3
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That sucks man, I was pretty stoked that it might work.
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Old 06-11-2008, 08:47 PM   #4
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yea me too...oh well i still got what i wanted (an actual crank trigger)....i just didnt want to have to use two sensors where one could do the job.
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Old 06-11-2008, 10:57 PM   #5
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Do you have the EDIS working?
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Old 06-11-2008, 11:57 PM   #6
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No, im using the stock sensors
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Old 06-12-2008, 12:08 AM   #7
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Guess I don't understand. If the 4-1 stock wheel didn't work how are you using the stock sensors with MS. You said it worked once, now it doesn't yet you say you're running the stock crank trigger now.
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Old 06-12-2008, 12:37 AM   #8
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I ground off another tooth on the crank wheel so there's two now....and im using the cam sensor for the sync. Settings on megatune are exactly the same as for an na cas.
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Old 06-12-2008, 08:16 AM   #9
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I see good deal. Maybe I missed your post about that in another thread.
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Old 06-12-2008, 01:27 PM   #10
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First post of this thread...right under the pic
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Old 06-12-2008, 09:21 PM   #11
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Thats what i get for getting excited and missing that sentence.
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Old 07-17-2008, 10:23 PM   #12
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I'm just curious to know if the NB crank wheel plate fits a 1.6 short nose crank pulley. IF the 4 holes are spaced equally I may just jump on this.
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Old 07-17-2008, 11:31 PM   #13
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The structure behind the pulley is pretty different. On a longnose 1.6, you have the Big Bolt holding the timing belt pulley onto the crank, then four small bolts hold the main pulley onto the timing pulley, much like on the 1.8. On the shortnose, the Big Bolt holds the main pulley onto the crank, with the timing belt pulley just sandwiched in there.

Still, there's only one way to know for sure. I'm sure FM salvage might be able to provide you with a wheel for testing purposes. Fabricating a mount for the sensor is up to you.
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Old 07-18-2008, 01:08 AM   #14
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I'll try the local salvage yards here first. We'll see what that nets me.
Mr Perez... You keep putting way too many ideas into my head
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